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C:\AudioTools\ALAC>ffmpeg -i pcmfile_48k_16bit_5.1.wav -acodec alac -ac 6
out.m4a
ffmpeg version N-69146-g90c9899 Copyright (c) 2000-2015 the FFmpeg
developers
built on Jan 19 2015 01:28:38 with gcc 4.9.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gn
utls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b
--enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm
--enabl
e-libilbc --enable-libmodplug --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enabl
e-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex
--enable-libtheora --enable-libtwolame --enable-libvidstab
--enable-libvo-aacen
c --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265
--enable-libxavs
--enable-libxvid --enable-lzma --enable-decklink --enable-zlib
libavutil 54. 17.100 / 54. 17.100
libavcodec 56. 20.100 / 56. 20.100
libavformat 56. 19.100 / 56. 19.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 8.100 / 5. 8.100
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Guessed Channel Layout for Input Stream #0.0 : 5.1
Input #0, wav, from 'pcmfile_48k_16bit_5.1.wav':
Duration: 00:02:50.14, bitrate: 4608 kb/s
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 6
channels, s16, 4608 kb/s
File 'out.m4a' already exists. Overwrite ? [y/N] y
Output #0, ipod, to 'out.m4a':
Metadata:
encoder : Lavf56.19.100
Stream #0:0: Audio: alac (alac / 0x63616C61), 48000 Hz, 5.1, s16p, 128
kb/s
Metadata:
encoder : Lavc56.20.100 alac
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le (native) -> alac (native))
Press [q] to stop, [?] for help
size= 20640kB time=00:02:50.15 bitrate= 993.7kbits/s
video:0kB audio:20631kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.042673%
C:\AudioTools\ALAC>mediainfo out.m4a
General
Complete name : out.m4a
Format : MPEG-4
Format profile : Apple audio with iTunes info
Codec ID : M4A
File size : 20.2 MiB
Duration : 2mn 50s
Overall bit rate mode : Variable
Overall bit rate : 994 Kbps
Writing application : Lavf56.19.100
Audio
ID : 1
Format : ALAC
Codec ID : alac
Codec ID/Info : Apple Lossless Format
Duration : 2mn 50s
Duration_LastFrame : -15ms
Bit rate mode : Variable
Bit rate : 993 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 20.1 MiB (100%)
On Mon, Jan 19, 2015 at 5:41 PM, Moritz Barsnick <barsn...@gmx.net> wrote:
> Hi Rashed,
>
> On Mon, Jan 19, 2015 at 17:22:18 +0530, Rashed wrote:
> > I am trying to generate multichannel ALAC content using FFMPEG but
> somehow
> > is seem to be getting only up to stereo. Is this a limitation of FFMPEG
> or
> > am i doing something incorrectly.
> >
> > ffmpeg -i pcmfile_48k_16bit_5.1.wav -acodec alac -ac 6 out.m4a
>
> Could you please, as always requested here, show us the complete, uncut
> console output from this command?
>
> Everything else is just guesswork.
>
> Moritz
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user@ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
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